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49 lines
2.2 KiB
Python
49 lines
2.2 KiB
Python
import pytest
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from helpers.cluster import ClickHouseCluster
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cluster = ClickHouseCluster(__file__)
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node1 = cluster.add_instance('node1', main_configs=['configs/remote_servers.xml'], with_zookeeper=True)
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node2 = cluster.add_instance('node2', main_configs=['configs/remote_servers.xml'], with_zookeeper=True)
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node3 = cluster.add_instance('node3', main_configs=['configs/remote_servers.xml'], with_zookeeper=True)
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node4 = cluster.add_instance('node4', main_configs=['configs/remote_servers.xml'], with_zookeeper=True)
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nodes = [node1, node2, node3, node4]
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@pytest.fixture(scope="module")
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def started_cluster():
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try:
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cluster.start()
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for i, node in enumerate([node1, node2]):
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node.query("CREATE DATABASE testdb")
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node.query(
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'''CREATE TABLE testdb.test_table(id UInt32, val String) ENGINE = ReplicatedMergeTree('/clickhouse/test/test_table1', '{}') ORDER BY id;'''.format(
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i))
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for i, node in enumerate([node3, node4]):
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node.query("CREATE DATABASE testdb")
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node.query(
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'''CREATE TABLE testdb.test_table(id UInt32, val String) ENGINE = ReplicatedMergeTree('/clickhouse/test/test_table2', '{}') ORDER BY id;'''.format(
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i))
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yield cluster
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finally:
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cluster.shutdown()
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def test_distributed_ddl_queue(started_cluster):
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node1.query("INSERT INTO testdb.test_table SELECT number, toString(number) FROM numbers(100)")
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node3.query("INSERT INTO testdb.test_table SELECT number, toString(number) FROM numbers(100)")
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node2.query("SYSTEM SYNC REPLICA testdb.test_table")
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node4.query("SYSTEM SYNC REPLICA testdb.test_table")
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node1.query("ALTER TABLE testdb.test_table ON CLUSTER test_cluster ADD COLUMN somecolumn UInt8 AFTER val",
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settings={"replication_alter_partitions_sync": "2"})
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for node in nodes:
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node.query("SYSTEM SYNC REPLICA testdb.test_table")
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assert node.query("SELECT somecolumn FROM testdb.test_table LIMIT 1") == "0\n"
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assert node.query(
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"SELECT If((SELECT count(*) FROM system.distributed_ddl_queue WHERE cluster='test_cluster' AND entry='query-0000000000') > 0, 'ok', 'fail')") == "ok\n"
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